smart51
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| posted on 2/8/10 at 11:28 AM |
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How much floor does there have to be?
I'm trying to make my exo build as light as possible. I'm now considering how much floor I need. I'll do the footwell and area up
to the seat of course but do I need to do under the seat? (single seater, no passengers, steel fabricated seat). Behind the seat is a plastic fuel
tank from the donor. Do I need a metal floor underneath this? Its all killograms and I'm looking for reasons to keep or get rid of sections of
the floor panel.
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Miks15
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| posted on 2/8/10 at 11:32 AM |
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out of interest, if you looking to save weight, how come you have a steel fabricated seat?
Why not an ally seat or a GRP seat?
With regards to the tank, theres no floor under my tank which is in the back of the car
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interestedparty
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| posted on 2/8/10 at 11:34 AM |
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Yep, no floor under tank, needs to be separated from engine and passenger compartment by bulkheads etc
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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smart51
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| posted on 2/8/10 at 11:55 AM |
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quote:
Originally posted by Miks15
out of interest, if you looking to save weight, how come you have a steel fabricated seat?
Why not an ally seat or a GRP seat?
I had some thin sheet steel for free. It weighs less than 5kg at the moment and I'm going to punch and swage some holes in the backrest to make
it lighter, but then add some thin padding. 0.7mm steel sheet weighs the same as 2.0mm aluminium so there's little to gain unless using paper
thin alloy. CF seats are lighter but cost more than some welding wire and gas. Light is good but free is better
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Miks15
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| posted on 2/8/10 at 12:08 PM |
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fair enough. All seems to make sense.
probs much lighter than my seats anyway 
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iank
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| posted on 2/8/10 at 12:38 PM |
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IIRC the atom has a moulded composite seat with no 'floor' underneath it.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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norfolkluego
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| posted on 2/8/10 at 05:53 PM |
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If the floor doesn't meet the bulkhead to partition off the driver completely the bulkheads pretty useless isn't it. If the fuel tank did
rupture you'd be sitting unprotected over a nice pool of petrol just waiting to go whoosh. Could get a bit toasty round the privates.
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The Black Flash
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| posted on 2/8/10 at 10:32 PM |
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...and don't forget wind resistance. Big holes in the floor can add a fair bit of drag as I understand it (the rear tub being a prime area).
Skipping the floor might save 2 or 3 Kg, but how much will it sap power at speed?
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